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Fiber Optic Monitoring of an Anti-slide Pile in a Retrogressive Landslide by Lei Zhang; Honghu Zhu; Heming Han; Bin Shi is a Engineering article available to read on EtoBox.

What is Fiber Optic Monitoring of an Anti-slide Pile in a Retrogressive Landslide about?

Anti-slide piles are one of the most important reinforcement structures against landslides, and evaluating the working conditions is of great significance for landslide mitigation. The widely adopted analytical methods of pile internal forces include cantilever beam method and elastic foundation beam method. However, due to many assumptions involved in calculation, the analytical models cannot be fully applicable to complex site situations, e.g. landslides with multi-sliding surfaces and pile-soil interface separation as discussed herein. In view of this, the combination of distributed fiber optic sensing (DFOS) and strain-internal force conversion methods was proposed to evaluate the working conditions of an anti-sliding pile in a typical retrogressive landslide in the Three Gorges reservoir area, China. Brillouin optical time domain reflectometry (BOTDR) was utilized to monitor the strain distribution along the pile. Next, by analyzing the relative deformation between the pile and its adjacent inclinometer, the pile-soil interface separation was profiled. Finally, the internal forces of the anti-slide pile were derived based on the strain-internal force conversion method. Accordi

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Author

Lei Zhang; Honghu Zhu; Heming Han; Bin Shi

Publisher

Elsevier BV

Published

2024

Language

EN

Field

Engineering (Physical Sciences)